Whether you feel responsible for it or not doesn't lessen their plight one bit, far as I can tell.

People who feel like they're not welcome in a community will react accordingly. And young men without future prospects are a major source of trouble everywhere; add that to the above, and what the Hell can you expect ?

I'm fully aware my point of view may sounds silly, but why the hell our Pole or Cambodian migrants don't piss me off as much as the muslim ones ?
Hey, our Asian migrants never drew even a fraction of the hostility the rather more numerous Somali refugees who came in the early Nineties still get. Doesn't make the latter's lot any better, or the problems our society gets from it any less largely self-inflicted.

It's racism, pure and simple. That it's concentrated on a single prominent (and relatively large) group quite possibly only makes it worse - if nothing else, it's not even being consistent...